scholarly journals The hyperbolic geometry of financial networks

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Martin Keller-Ressel ◽  
Stephanie Nargang
Keyword(s):  
Hyperbolic Geometry ◽  
Structural Changes ◽  
Banking System ◽  
Financial Networks ◽  
Stress Tests ◽  
Disc Model ◽  
European Banking ◽  
European Banks ◽  
Hyperbolic Embedding ◽  
Embedding Methods

AbstractBased on data from the European banking stress tests of 2014, 2016 and the transparency exercise of 2018 we construct networks of European banks and demonstrate that the latent geometry of these financial networks can be well-represented by geometry of negative curvature, i.e., by hyperbolic geometry. Using two different hyperbolic embedding methods, hydra+ and Mercator, this allows us to connect the network structure to the popularity-vs-similarity model of Papdopoulos et al., which is based on the Poincaré disc model of hyperbolic geometry. We show that the latent dimensions of ‘popularity’ and ‘similarity’ in this model are strongly associated to systemic importance and to geographic subdivisions of the banking system, independent of the embedding method that is used. In a longitudinal analysis over the time span from 2014 to 2018 we find that the systemic importance of individual banks has remained rather stable, while the peripheral community structure exhibits more (but still moderate) variability. Based on our analysis we argue that embeddings into hyperbolic geometry can be used to monitor structural change in financial networks and are able to distinguish between changes in systemic relevance and other (peripheral) structural changes.

“The Crooked Smile of TCR”: Banks’ Solvency and Restructuring Costs in the European Banking Industry

SAGE Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 215824402110459
Author(s):  
Małgorzata Iwanicz-Drozdowska ◽  
Krzysztof Jackowicz ◽  
Maciej Karczmarczyk
Keyword(s):  
Probability Function ◽  
Bank Failure ◽  
Capital Adequacy ◽  
Special Importance ◽  
Stress Tests ◽  
Distribution Probability ◽  
Total Capital ◽  
European Banking ◽  
European Banks ◽  
Bank Restructuring

In this study, we analyze the probability of bank failure, the expected losses, and the costs of bank restructuring with the application of a lognormal distribution probability function for three categories of European banks, that is, small, medium, and large, over the post-crisis period from 2012 to 2016. Our goal was to determine whether the total capital ratio (TCR) properly reflects banks’ solvency under stress conditions. We identified a phenomenon that one can call the “crooked smile of TCR”. Medium-sized banks with relatively high TCRs performed poorly in stress tests; however, the probability of bank failure increases slightly with the size of the bank, while the TCR decreases. We claim that the focus on capital adequacy measures is not sufficient to achieve the goal of improving banks’ stability and reducing their restructuring costs. Our results are of special importance for medium-sized banks, as these banks are not regularly subjected to publicly available stress tests.

Bank Capital Requirements after the Financial Crisis

2019 ◽  
pp. 706-735
Author(s):  
Mark E. Van Der Weide ◽  
Jeffrey Y. Zhang
Keyword(s):  
Financial Crisis ◽  
Structural Changes ◽  
Banking Sector ◽  
Balance Sheet ◽  
Banking System ◽  
Capital Requirements ◽  
Bank Capital ◽  
Regulatory Capital ◽  
Stress Tests ◽  
Global Banking

Regulators responded with an array of strategies to shore up weaknesses exposed by the 2008 financial crisis. This chapter focuses on reforms to bank capital regulation. We first discuss the ways in which the post-crisis Basel III reforms recalibrated the existing framework by improving the quality of capital, increasing the quantity of capital, and improving the calculation of risk weights. We then shift to the major structural changes in the regulatory capital framework—capital buffers on top of the minimum requirements; a leverage ratio that explicitly accounts for off-balance-sheet exposures; risk-based and leverage capital surcharges on the largest banks; bail-in debt to facilitate orderly resolution; and forward-looking stress tests. We conclude with a quantitative assessment of the evolution of capital in the global banking system and in the US banking sector.

scholarly journals The impact of the European Banking Union’s Single Supervisory Mechanism on corporate governance practices in European banks

2018 ◽  
Vol 13 (2) ◽  
pp. 164-177 ◽  
Author(s):  
Udo Braendle
Keyword(s):  
Corporate Governance ◽  
Banking System ◽  
Banking Union ◽  
Single Supervisory Mechanism ◽  
European Banking Union ◽  
Regulatory Changes ◽  
Governance Practices ◽  
European Banking ◽  
European Banks ◽  
The Impact

Weak corporate governance in financial institutions has been a contributing factor of the financial crisis. The topic has, therefore, become the key priorities of banking supervision, because one of the takeaways was that. The article gives an overview about the newly established European Banking Union and about its structure focusing on the first pillar, the Single Supervisory Mechanism (SSM). In a second step, the focus is laid on the recent regulatory changes regarding corporate governance, the related supervisory practice and implications for European banks. Overall, the conducted changes in the regulatory framework, especially regarding corporate governance, seem to meet the objective of ensuring safety and soundness of the European banking system. Room for improvement is found regarding proportionality and transparency of the supervisory practices as well as its influence on banks’ profitability.

scholarly journals What future for the European banking system?

2018 ◽  
Vol 87 (4) ◽  
pp. 141-151
Author(s):  
Lorenzo Bini Smaghi
Keyword(s):  
Interest Rates ◽  
Capital Market ◽  
Banking Sector ◽  
Banking System ◽  
The Us ◽  
Low Interest Rates ◽  
European Banking ◽  
European Banks ◽  
Main Factors

Zusammenfassung: Das Papier beleuchtet die Hauptgründe, die der sinkenden Rentabilität des europäischen Bankensektors im Vergleich zum US-amerikanischen zugrunde liegen. Sie unterstreicht insbesondere die Rolle niedriger Zinsen, geringerer Konzentration, strengerer Regulierung und des Fehlens eines tiefen und liquiden Kapitalmarktes. Ein stärkeres europäisches Bankensystem erfordert echte gesamteuropäische Banken und eine echte Kapitalmarktunion. Summary: The paper assesses the main factors underlying the decreasing profitability in the European banking sector, in comparison with the US. It underscores in particular the role of low interest rates, lower concentration,tighter regulation and the absence of a deep and liquid capital market. A stronger European banking system requires true pan-European banks and a true capital market union.

scholarly journals MACROPRUDENTIAL SUPERVISION AND AGENTS’ INFORMATION: WHAT STRESS TESTS REALLY TELL THE MARKETS

2022 ◽  
Author(s):  
FAUSTO PACICCO ◽  
LUIGI VENA ◽  
ANDREA VENEGONI
Keyword(s):  
Risk Perception ◽  
Banking System ◽  
Market Risk ◽  
Stress Tests ◽  
European Banking Authority ◽  
Idiosyncratic Shocks ◽  
Systemic Crisis ◽  
European Banking

Central bank’s macroprudential supervisory activities have to fulfill three distinct tasks: (i) assessing the banking system’s vulnerability to exogenous adverse turbulence, (ii) evaluating the risk of systemic crisis originating from idiosyncratic shocks, and (iii) measuring financial market’s sensitivity to policy stimuli. Given that macroprudential stress tests are the centerpiece of this policy approach, it is important to establish whether they are up to the task. We study how the 2011–2018 European Banking Authority stress tests affected market risk perception and show that they provided agents with valuable information on the policy stances and the vulnerabilities of the banking system, carrying out the above tasks successfully, especially the second and third tasks.

scholarly journals From agent-based modeling to actor-based reactive systems in the analysis of financial networks

2021 ◽  
Author(s):  
Silvia Crafa
Keyword(s):  
Reactive Systems ◽  
Computational Cost ◽  
Financial Networks ◽  
Stress Tests ◽  
Control Logic ◽  
Distinctive Features ◽  
Agent Based ◽  
Economic Agents ◽  
European Banking

AbstractWe present a new framework for the analysis of financial networks, called Actor-based Reactive Systems (ARS), that pushes further the Agent-Based approach (ABM) by resorting to ideas coming from the study of distributed systems in computer science. Two distinctive features, namely a fundamentally different management of time and a fully decentralized control logic, have a profound impact in terms of expressiveness of analysis, flexibility of modeling, and efficiency of experimentation. To illustrate the feasibility of the framework, we develop a realistic case study by analyzing the systemic risk of a model of the European banking network with a nontrivial contagion procedure, that combines an initial asset shock with the negative feedback loop triggered by asset fire sales. We show that, compared to ABMs, ARSs bring about finer-grained analyses, with a greater degree of heterogeneity and adaptivity of economic agents. Moreover, the very low computational cost and the detailed account of the system’s execution support the design and the development of very flexible stress tests to rapidly experiment with many hypothetical scenarios in a test-oriented style.

scholarly journals Comparing Different Systemic Risk Measures for European Banking System

2018 ◽  
Vol 12 (1) ◽  
pp. 35 ◽  
Author(s):  
Annalisa Di Clemente
Keyword(s):  
Systemic Risk ◽  
Value At Risk ◽  
Financial Stability ◽  
Risk Measures ◽  
Banking System ◽  
Expected Shortfall ◽  
Conditional Value At Risk ◽  
Dependence Structure ◽  
European Banking ◽  
European Banks

This research examines and compares the performances in terms of systemic risk ranking for three different systemic risk metrics based on daily frequency publicly available data, specifically: Marginal Expected Shortfall (ES), Component Expected Shortfall (CES) and Delta Conditional Value-at-Risk (ΔCoVaR). We compute ΔCoVaR, MES and CES by utilizing EVT principles for modelling marginal distributions and Student’s t copula for describing the dependence structure between every bank and the banking system. Our objective is to attest whether different systemic risk metrics detect the same banks as systemically dangerous institutions with refer to a sample of European banks over the time span 2004-2015. For each bank in the sample we also calculate three traditional market risk measures, like Market VaR, Sharpe’s beta and the correlation between every bank and the banking system (European STOXX 600 Banks Index). Another aim is to explore the existence of a link among systemic risk measures and traditional risk metrics. In addition, the classification results obtained by the different risk metrics are compared with the ranking in terms of systemic riskiness (for European banks) calculated by Financial Stability Board (2015) using end-2014 data and collected in its list of Global Systemically Important Banks (G-SIBs). With refer to the entire sample period, we find a good coherence of ranking results among the three different systemic risk metrics, in particular between CES and ΔCoVaR. Moreover, we find for MES and ΔCoVaR a strong linkage with beta and correlation metrics respectively. Finally, CES metric shows the highest level of concordance with the list of G-SIBs by FSB with refer to European banks.

scholarly journals European Monetary Measures to Support Economic Recovery

2017 ◽  
Vol 4 (2) ◽  
pp. 101
Author(s):  
Bogdan Munteanu
Keyword(s):  
Economic Growth ◽  
Cost Benefit Analysis ◽  
Banking System ◽  
Cost Benefit ◽  
Economic Recovery ◽  
Fiscal Policies ◽  
The European Union ◽  
Benefit Analysis ◽  
Stress Tests ◽  
European Banking

The present article aims to look at the current monetary measures deployed by ECB to address the economic context of below expectations economic growth and inflation, taking into account the expression of monetary policy via the Expanded Asset Purchase Programme. This tool is used to push financial liquidity into the economies of the European Union, in a banking system affected by the crisis and which has been shown to be still at risk by the latest stress tests conducted by the European Banking Authority. The article points out why monetary measures are important to support the economic recovery in Europe, in an interventional context of monetary and fiscal policies of governing authorities, appealing to economic models to explain how the policies contribute to economic growth and development. The methodology used by the article is economic analysis and rationale, cost-benefit analysis, statistics of money market and banking industry indicators, etc. The conclusion emerging from this article is that the Asset Purchase Programme of ECB led in a certain degree to an improvement in the macro-economic environment on yields and on its transmission channels into the financial system and into economies.

scholarly journals ANALYSIS OF THE DYNAMICS OF THE EUROPEAN BANKING SYSTEM

2020 ◽  
Vol 6 (4) ◽  
pp. 156-167
Author(s):  
Marianna Stehnei ◽  
Maryna Korol
Keyword(s):  
European Union ◽  
Banking Sector ◽  
Global Financial Crisis ◽  
Banking System ◽  
The United States ◽  
Practical Significance ◽  
Positive Trend ◽  
The European Union ◽  
European Banking ◽  
European Banks

Relevance of research. Existence of global financial crises points to the fact that in the world there is no perfect banking system and therefore the efficiency of the banking system requires a detailed study, including major performance indicators. The aim of the study is to summarize and characterize the existing trends of banking system evolution in the European Union. Methodological basis of the study – is based on the analysis of the study of the dynamics of such indicators as the number of banking institutions, the volume of assets and liabilities, asset quality, as well as the profitability of the banking sector of the European Union. A systematic analysis of the quantitative and qualitative composition of the above-mentioned banking indicators, synthesis and generalization were used to generalize and formulate conclusions. Scientific results. This article is devoted to the study of the dynamics of the main indicators of the European banking system during the period from 2000 to 2019 inclusive. It is argued that the number of commercial banks has decreased over the last decade, including in the European Union. Bank branches are no exception, the negative dynamics of the number of which was followed by the global financial crisis of 2008-2009. At the same time, it was found that the volume of bank assets shows a positive trend. Regarding the geographical distribution of assets, in 2019 the leading position was taken by France, Germany, Italy and Spain. At the same time, the volumes of liabilities of the financial sector of the European Union for the studied period also show a positive trend. The structure of loans is characterized and it is emphasized that the vast majority of loans are issued to non-financial corporations and households, which is an evidence of the business orientation of banks to provide loans to the real sector of the economy. It has been established that one of the key problems facing European banks is profitability, which today still could be on a better level than in 2007, the year of the financial surge. This situation distances European banks from competitors in the United States, which have shown positive dynamics of their profits. However, it is encouraging that the quality of assets of the European Union banks has significantly improved over the last 4 years. The practical significance of the study is to rate the strengths and weaknesses of the European banking system. Significance/originality. The results achieved from an integrated view of the functioning of the banking system of the European Union, which will allow the authors to further build a model for verifying the stability of the banking system.

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